Containers

ABSTRACT

A closure assembly for containers wherein a synthetic-resin plug-type cap has a disk portion adapted to overlie the rim of the container and a cylindrical tubular boss formed with an outwardly convex circumferential bulge or bead of arcuate profile. The inner wall of the container mouth is provided with a plurality of spaced-apart inwardly projecting circumferential beads or bulges of arcuate profile and progressively increasing elevation inwardly from the rim, the bead of the cap resting behind the last or innermost bead of the container mouth in a sealing position of the cap.

United States Patent Inventor Herbert W. Jaeniche D-764l, Leutesheim,Germany Appl. No. 869,118 Filed Oct. 24, 1969 Patented Aug. 3, 1971Priority Nov. 26, 1968 Austria 11501/68 CONTAINERS 2 Claims, 1 DrawingFig.

US. Cl 150/.5, 215/31, 220/ R Int. Cl 365d 1/16, Bd 39/04 Field ofSearch /5;

215/31, DIG. l; 220/60 R References Cited UNITED STATES PATENTS3,335,774 8/1967 Reed Primary Examiner-Donald F. Norton An0rneyKarl F.Ross ABSTRACT: A closure assembly for containers wherein asynthetic-resin plug-type cap has a disk portion adapted to overlie therim of the container and a cylindrical tubular boss formed with anoutwardly convex circumferential bulge or bead of arcuate profile. Theinner wall of the container mouth is provided with a plurality ofspaced-apart inwardly projecting circumferential beads or bulges ofarcuate profile and progressively increasing elevation inwardly from therim, the bead of the cap resting behind the last or innermost bead ofthe container mouth in a sealing position of the cap.

Patented Aug. 3, 1971 3,596,694

Herberf W. Jaeniche INVhIVIUR.

0A g I 12 55 Attorney CONTAINERS The present invention relates to acontainer made of plastic material or a similar resiliently yieldingmaterial and having a closure means in the form of a lid, stopper orplug.

Production lines in which filling material is charged into containersare also normally provided with installations for labelling thecontainers. To enable this operation to be performed as smoothly and assatisfactorily as possible, a certain pressure of application isnecessary for the gummed labels to be applied to the container withoutcreasing or other difficulty. This pressure of application may easilycause the container made of resilient material to be deformed so thatthe outer surface of the container no longer has a circular crosssection but is, for example, elliptical or avoid. This deformation maycause the edge of the lid to be insufficiently supported or notsupported at all and for the lid to become detached or to spring out.This disadvantage may also be increased when fitting the closure lidwith a spacer where an additional axial pressure is exerted.

According to the present invention a container made of I plasticmaterial or the like resiliently yielding material having a closure lidwhich is provided with an extension adapted to project into thecontainer and which lid is provided in the region projecting furthestinto the container with a radiused enlargement of somewhat larger outerdiameter than the internal diameter of the container, is characterizedby the feature that the container is provided with a plurality ofradiused beads on its inside surface which are locatable behind theenlargement when the closure lid is inserted; the inner surfaces of theinside beads being defined by an imaginary line of rotation the diameterof which diminishes towards the interior from the open end of thecontainer. Preferably the innermost bead is substantially supportedagainst its bead when the closure means is inserted.

The invention will be described further, by way of example, withreference to the accompanying drawing, which is a fragmentary axialsection through the top portion of a container and a lid.

The wall of the container 1 is cylindrical and a lid 2 having anextension 3 projecting into the interior of the container 1 is showninserted in the open end 6 of the container. The extension 3 is providedwith a radiused enlargement 4 which is positionable (as shown) inwardlyof the open end 6. The internal diameter of the container 1 is denotedby a, the somewhat smaller outer diameter of the extension 3 by b, andthe outer diameter of the enlargement 4 by c. The outer diameter 0 ofthe enlargement 4 is slightly larger than the inside diameter of a ofthe container 1, so as to obtain a perfect support of the enlargement 4on the inside wall surface of the container. A radiused inside bead 5"is located on the inner wall surface of the container 1 in known mannerand substantially supports bead 4 in the inserted state of the closurelid. Two further inside beads 5' and 5 are provided between the insidebead 5" and the open end edge of the container 1. The diameters of theinner surfaces of these inside beads are diminished from the open end 6of the container towards the interior thereof so that the opening of thecontainer is constricted as shown by projection of a line of contact 7against the inner surfaces of the three inside heads 5, 5 and 5". Theseinside beads facilitate the insertion of the lid since a graduallyincreasing pressure against the outer diameter of the lid 2 leads to amaximum increase of the additional sealing and arresting actionconnected therewith. After insertion and upon location of the lid aslight snap action occurs and hence an additional sealing action isprovided. The head of the lid is gradually led to maximum constrictionand hence the danger of ripping or other damage to the closure lid 2 isreduced.

1 claim:

1. In combination, a closeable container of resiliently yieldableplastic material having a circular edge portion defining a circular oening having an internal wall surface leading to the interior 0 saidcontainer, and a closure means comprising a lid member for covering saidopening and having a circular wall projection extending from theperipheral regions thereof with clearance from said opening whenpositioned in said opening, characterized by the feature that anoutwardly extending radiused enlargement is formed on the free end ofsaid projection of slightly larger outside diameter than the internaldiameter of said wall surface, and that a plurality of radiused beadsare provided around the internal wall surface approximate said openingand are found between the radiused enlargement and said lid member whensaid lid is inserted as closure over said opening; the inner limitingsurfaces of said beads being defined by an imaginary line of rotationthe diameter of which diminishes towards the interior of the container.

2. A container according to claim 1 wherein the bead farthest from theopening is substantially supported against the enlargement when the lidis inserted in said opening.

1. In combination, a closeable container of resiliently yieldableplastic material having a circular edge portion defining a circularopening having an internal wall surface leading to the interior of saidcontainer, and a closure means comprising a lid member for covering saidopening and having a circular wall projection extending from theperipheral regions thereof with clearance from said opening whenpositioned in said opening, characterized by the feature that anoutwardly extending radiused enlargement is formed on the free end ofsaid projection of slightly larger outside diameter than the internaldiameter of said wall surface, and that a plurality of radiused beadsare provided around the internal wall surface approximate said openingand are found between the radiused enlargement and said lid member whensaid lid is inserted as closure over said opening; the inner limitingsurfaces of said beads being defined by an imaginary line of rotationthe diameter of which diminishes towards the interior of the container.2. A container according to claim 1 wherein the bead farthest from theopening is substantially supported against the enlargement when the lidis inserted in said opening.